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Effects of intrathecal injection of 1, 10, and 100 μg of the κ-opioid receptor agonist U62066 on the pressor and cardioaccelerator responses to static contraction in freely perfused and ligated rats. Sample sizes and baseline values are indicated within means for their corresponding conditions. Data are expressed as means ± SE. †P < 0.05 vs. before U62066 in freely perfused rats, *P < 0.05 vs. before U62066 within ligated rats.
